Dyeing-tub.



11. B. MILLS.

DYEING TUB.

APPLloATIoN FILED MAY 12, 1909.

Patented J an. 9, 1912;

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RADCLIFFE B. MILLS, OF PHILADELPHIA, PENNSYLVANIA.

DYEINGr-TUB.

Specification of Letters Patent.

Patented Jan. 9,1912.

Application filed May 12, 1909. SeraI No. 435,529.

To all whom it may concern:

Be it known that I, RADCLIFFE B. MILLS, a citizen of the United States,residing at Philadelphia, in the State of Pennsylvania,

. have invented certain new and usefulImprovements in Dyeing-Tubs, ofwhich the following is a specification, reference being had to theaccompanying drawing, forming a part hereof.

My Ainvention relates to means whereby various 'naterials such as strawbraid, rafla, hosiery, felt, and cotton and wool in the raw state, andespecially materials which are compactly placed in the dyeing tub, maybe dyed evenly throughout, and whereby the dyeing solution supplied tothe material may be uniform at all times.

Having these and other objects in view the invention consists in the newand novel features of construction and combinations of parts herein setforth and claimed.

In the accompanying drawing Figure 1 is an end elevation in section ofmy improved dyeing tub. Fig. 2 is a side elevation in' section on theline 2 2 of Fig. 1. Fig. 3 is a plan view in section on line 3 3 of Fig.1.

The dyeing apparatus such as the tub or receptacle 1 is preferablyrectangular in shape, although it may be circular or of any otherdesired shape, and is provided with a false bottom 2 provided with aplurality of perforations 3. The tub is divided into a main or dyeingvat 4 and a secondary or heating chamber 5 by any suitable means as apartition 6, and said vat and chamber communicate with each otherthrough the perforations 8 provided in the false bottom 2. The partitionpreferably extends slightly above the normal level of the liquorcontained in the tub. If the tub is rectangular in shape preferably twomixing and heating chambers are provided.

Suitable means are provided for heating the dyeing liquor in thesecondary chamber comprising preferably a pipe 7 having a plurality ofperforations 8 therein for supplying steam, but such perforations arenot essential in dyeing certain classes of goods. The pipe 7 ispreferably provided with one or more branches according to the number ofsecondary chambers in the tub and with valves 9 for regulating thesupply of steam.

At suitable intervals throughout its length the secondary chamber isprovided with a -number of partitions 10 separating said chamber into, aplurality of compartments which may communicate with each other bothabove and below the partitions. Said partitions prevent the liquor fromcirculating or racing in the chamber and force the same to rise and flowover into the dyeing vat.

In operation dyeing liquid is supplied to the tub and rises to the samelevel in the chamber and in the vat. Steam is then admitted to the pipeswhich heats the liquor thereby mixing the same and also causing it tooverflow the partition into the main vat.. By this construction aconstant circulatio-n and agitation of the dyeing liquor is obtainedwhich keeps it of uniform color and causes it to penetrate evenly allthe material in the vat. The dyeing is accomplished continuously andwithout removing, rearranging or disturbing the material in any manneruntil the dyeing is completed. Consequently the vat may be packed moretightly with material than is otherwise possible and the dyeing isaccomplished more quickly. No mechanical agitator is necessary, sincethe circulation is maintained automatically by the heating and by theescaping steam.

Although I have shown one form of apparatus embodying my invention it isobvious that many changes may be made therein which are within theknowledge of those skilled in the art. For instance, the dye- 'ing tubmay be circular in shape, in which case anannular mixing chamber may beprovided.

Various other changes may be made without departing from the spirit ofthe invention, provided the means set forth in.the following claims beemployed.

I claim as my invention:

1. In a dyeing apparatus, a receptacle f provided with a perforatedplate arranged near its bottom, a partition resting on said plate toform a heating chamber in said receptacle, a steam supply pipe arrangedin said heating chamber above the level of said perforated plate andprovided with perforations to permit escape of steam from said pipe, andspacing blocks in said chamber above the steam pipe to divide saidchamber into a plurality of compartments.

2. In a dyeing apparatus, a receptacle, to contain a dyeing liquor',r afalse bo-t-tom in said receptacle having a plurality of perforationstherethrough, a plurality of partitions in said receptacle extendingabove the normal level of the dyeing liquor and seating upon said falsebottom to form a plurality of heating chambers in said receptacle, meansfor supplying steam to said heating chambers above the level of saidfalse bottom whereby the liquor contained therein is agitated and heatedand caused to overflow said partitions and Create a oontinuous uniformcirculation between said chambers and the interior of the receptacle,and means for regulating the quantity of steam supplied to said heatingchambers.

This speoieation signed and witnessed this 1st day of March, A. D.,1909.

RADCLIFFE B. MILLS.

Signed in the presence 03E- ALBERT STE'IsoN, THOMAS A. PRICE.

Copies of ythis patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. C.

